Ball cock



FIG. 1 is a perspective view taken from the top, rear and right side of a ball cock showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof; and

FIG. 7 is a front elevational view thereof.

The fragmentary broken-line showing of a float lever in FIGS. 1, and 4 through 7, is for purposes of illustration only and forms no part of the claimed design. 

The ornamental design for a ball cock, as shown and described. 